They managed furtive meetings, sometimes in her apartment, occasionally
at a fast-food cafe or ill-lit parking lot and, once, during a
reckless, heady weekend in San Francisco. Yet theirs was no ordinary
tale of frustrated needs and petty betrayals.

Richard Miller, 47, was a 20-year veteran of the FBI whose
counterintelligence work gave him easy access to secret documents
dealing with the activities of Soviet aliens. Apparently for love and
money, he passed a broad...